Thermoplastic polyurethanes (TPU) combines the best of rubber and plastic, without the weaknesses inherent in plasticized vinyl films that are subject to brittleness and other problems caused when plasticizers leach to the surface. Urethane is easy to work with, and is readily modified to suit a particular application through the addition of fillers, colors, stabilizers, and lubricants, as well as other additives.

Durometer (Hardness) Urethane film and sheet can be produced in a range of durometers (Shore A 75 - Shore D 55) from relatively stiff to a thin film having an extremely soft, non-plastic feel that is ideal for products that come in contact with the skin.

Low temperature flexibility Urethanes feature superior flexibility over a wide durometer range, even at temperatures as low as -60°F (-50°C).

Tensile strength Tensile strength ranges from 4,000 to 10,000 psi, assuring reliability and durability over the life span of the end product. Because urethanes are tough, they can be used in thinner gauges when compared to vinyl.

Elongation TPU film and sheet can elongate as much as 800% and return to its original dimension without significant loss of "memory."

Abrasion resistance Polyurethane provides excellent abrasion resistance. In profile form it is tough enough for conveyor drive belts and protective sheaves for elevator cables and pulleys.

Chemical and environmental resistance Polyether and polyester urethanes each have specific chemical resistance characteristics, such as resistance to hydrocarbons, chemicals, ozone, bacteria, fungus, and moisture, as well as skin oils. They provide durability and long life in harsh industrial environments.

Fabrication versatility Urethane can be fabricated in many ways with many different substrates, enhancing design versatility. Sheet can be fabricated with urethane tubing to provide the benefits of urethane to an entire product system, such as in linked bladder applications.

Our Urethane can be:

Cut

Sewn

Adhesive bonded

Laminated

Vacuum formed

Radio frequency (RF) sealed

Thermally bonded to itself or other materials

Printed or silk-screened

Film and Sheet

TPU offers a broad range of high-performance properties and characteristics, making it the material of choice for many "can't fail" applications. It is inherently strong, tough, and easy to work with, and unlike vinyl, it contains no plasticizers, so it won't become brittle or lose its performance properties over time.

TPU compounds possess a combination of properties not available in any other thermoplastic material. When two of these properties are needed in an application, such as low temperature flexibility and soft durometer, TPU will usually outperform any other material. (View properties comparison chart)

Our Urethane offers a full range of thermoplastic polyurethane, including aromatic and aliphatic materials in both polyester and polyether. Film and sheet are available in thicknesses from .001" to .060", and in widths from 6" to 96". Our films are available in Tubular form, single wound sheeting and other configurations. A variety of colors, opacities and surface textures are available.

Standard grades of Urethane film and sheet satisfy most application requirements. Other grades are available or can be custom compounded to meet specific application needs, including films rated for potable water contact and UL Listed flame-resistance, as well as food and medical requirements.

Properties of The Film - TPU

Tear strength

Tear strength is the term
which defines the resistance of a notched test specimen
( TPU Elastomers ) to tear propagation. Tear strength is
generally regarded as the critical indication of the
physical strength to external force. In this respect, our film
is superior to most of other plastics.

Properties

The Film

PVC

NBR

CR

NR

Hardness shore A

96

90

94

87

78

70

77

Tear
Strength (kN/m)

Right angle
cut

129

80

70

70

37

36

65

Line cut

137

63

38

48

19

25

40

Abrasion resistance

Our film
can withstand a lot of physical abuse including scratch,
friction, corrosion forced upon the surface of the materials. With over three times
the durability of rubber, Our film provides excellent abrasion
resistance, functioning well across a broad range of
end-applications.

The Film

Rubber

Nylon

PVC

PE

Other Plastic

Abrasion

(mg)

Item

Abression

(mg)

Item

Abression

(mg)

Item

Abression

(mg)

Item

Abression

(mg)

Item

Abression

(mg)

0.5 ~ 3.5

SBR

177

NYLON6

366

General

160

HDPE

29

PS

324

NBR

205

NYLON66

49

Soft grade

187

LDPE

70

PBS

545

CR

280

NYLON610

16

Hi-strength

122

PET

18

NR

146

NYLON11

24

ABS

275

Flex-Crack resistance

Flex-crack resistance should
be taken into account when it comes to the selection of
composite film that are constantly under severe external
force, and the stability to flex is critical.
Our film exhibits excellent dynamic flex performance and has lead
to the use in many demanding applications.

Properties

The Film

PVC

NBR

CR

NR

Hardness shore A

96

90

94

87

78

70

77

Flexural

(10K
Time)

192

300 *

165

300 **

10

300 **

25

*no
crack effect after 3000K times

**Crack effect becomes inevitable after
3000K times

Hydrolysis resistance

At normal
temperatures, our film
exhibits outstanding resistance to hydrolysis for
1-2 years without undergoing any changes
(decomposition) while its mechanical properties are
still maintained. In particular,
our film Ether grade demonstrates superior hydrolysis
resistance to Ester grade. If Polyester based TPU
film series is exposed for six months to hot water
at 50 degrees ( or at 70 degrees for three
weeks, or 100 degrees for 3 to 4
days ), an irreversible break down of the Polyester
chains will occur through hydrolysis ( decomposed )
; and as the consequences, the mechanical properties
of the film will deteriorate. In this respect,
our film is regarded as environmentally friendly materials.
For end applications that constant contact with
water is inevitable, our film Ether grade is certainly the
ideal candidate to be taken into consideration.

Resistance to oil,
chemicals and greases

The excellent resistance to greases
and pure mineral oils (such as lubricating, fuel,
and diesel oils) provided by our film makes it well
suited for many industrial and food contact
applications. Our film does not react chemically to the oil contamination
and usually results in higher tensile strength than
the initial properties detected. While the response
of other plastics materials to oil contamination
appears to be poor, Our film has once again proved to be
superior to other plastics materials. However, in
the case of contamination of water identified in
mineral oils, the reduction in TPU film physical
properties is inevitable.

Properties

ASTM No.1
oil

ASTM No.3
oil

The Film

NBR

CR

The Film

NBR

CR

Hardness

Tensile strength

Elongation

Volume

0

+5.5

+15.5

-0.5

+15

+20.1

-21.5

-3.8

-2

-10.2

-13.2

+1.5

-1

-6.5

-6.8

+3.7

-6

-5.6

-17.6

-12.7

-20

-27.3

-33.3

+56.2

Heat resistance and
ageing (Weatherability)

Plastics are
chemically degraded by the effect of UV-radiation
and heat. For outdoor applications, weather
stability is an important criteria in material
selection. For use in high temperature ( above 70
degrees,
for example ), various grades are available that can
provide additional protection against degradation (
oxidized, aging) under any severe climates.
Our film can be used over a wide range of temperatures. While
Ester grade can withstand temperatures up to 130
degrees,
Ether grade can withstand up to 90 degrees.
The table below shows the comparison of
our film to other plastics to other plastics in respect to
degradation.

Properties

The Film

Ester base

PVC

NBR

CR

NR

95A

85A

85 PHR

80 PHR

Tensile /MPa first

34.3

25.3

16.0

16.3

11.6

10.3

16.3

after
aged**

51.3

42.4

14.6

18.1

9.8

9.6

5.6

variation

150

168

91

111

85

93

34

Elongationfirst

700

517

308

350

400

400

450

after
aged ?

460

600

213

238

188

238

450

variation

66

116

69

68

47

60

0

Low Temperature
Flexibility

Our film can withstand temperature down to -30 degrees while mechanical and physical properties are still
maintained. Most importantly, our film will not become brittle and can thus
be utilized as a replacement for PVC. In this
respect, our film can be used for applications that require superior
low temperature flexibility.

Our film can be easily processed by high frequency or
hot plate welding and has been widely used in
inflatable end-applications. The diffusion
coefficient is a material constant which specifies
the volume of gas that will pass through a test
specimen of known surface area and thickness in a
fixed time, with a given partial pressure
difference. The diffusion coefficient varies to
certain extent depending on the type of gas in
questions. Generally speaking, our filmEster series has superior gas permeability to
Ether grade.

Biocompatibility

Our film exhibits superior biocompatibility. With the
characteristics of sterilization, anti- allergic,
without creating the source of heat and agitation to
parts, Our filmare widely utilized in medical, sanitary,
sport, or protective devices.

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